Question

A train is running the speed of ? Km hr crosses a platform in 30 seconds.


a.Man who is moving in same direction crosses in 20 sec if the speed of man is 6km/hr then find the speed of train

Answer 1

Answer:

The speed of the train is 3.96 km/hr

Step-by-step explanation:

let the speed of the train be x.

train takes 30 sec to cross-platform

A mam also moves in the same direction.

He takes 20 sec to cross-platform.

His speed is 6 km/hr.

Distance travelled by a man = speed × time

= 6 km/hr × 20sec

= 0.033 km

Therefore,

the distance travel by man is equal to distance travel by train.

Speed of train = $\dfrac{0.033km}{30sec}$

= 3.96 km/hr